Repeater gun



3 Sheets-Sheet l Il Il M. MAERK .REPEATER GUN Jan. 11, 1955 Filed April 22, 1952 REPEATER GUN Filed April 22, 1952 3 Sheets-Sheet 2 M. MAERK REPEATER GUN Jan. 11, 1955 5 Shee'cs-Shee'fl Filed April 22, 1952 y, vf,

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REPEATER GUN Mikkel Maerk, Lokken Verk, Norway Application April 22, 1952, Serial No. 283,710

Claims priority, application Norway May 13, 1947 12 Claims. (Cl. 4211) The present invention has for its object a hand operated re arm of the repeater gun type in which the breech mechanism is opened and closed and the loading of the gun brought about by manually moving a slidably mounted gun barrel forward and backward in re* lation to the guns butt end stock.

This application is a continuation in part of my pending prior application, Serial Number 23,765, filed on the 28th of April 1948.

One important feature of a repeater gun constructed in accordance with the present invention consists in the arrangement of a trough-shaped mechanism casing (receiver) on the top edges of which the gun barrel is slidably mounted. The space in the fore part of the said trough-shaped casing below the barrel may have suiiicient depth to utilize same as a cartridge magazine.

The breech block or bottom piece to close the barrels rear end when in the firing position may be of any suitable construction of the stationary or movable type.

The barrel may be adapted to be fastened directly to the breech casing when in ring position or to a movable breech block as an intermediary member, in which case the breech block is provided with means to fasten same to the breech casing when the barrel and breech block are in their rearmost positions.

In a preferred embodiment of the invention the breech block is movably mounted in the rear part of the breech casing and movable in guides in a longitudinal as well as a transverse direction in relation to the barrel axis.

Another important feature of a gun constructed in accordance with the invention consists therein, that the fore end part of the gun stock constitutes a separate body fastened to the gun barrel and adapted to function as a grip or handle for the sliding barrel. This fore end stock may be hollow and adapted to embrace the fore part of the mechanism casing forming a cartridge magazine and is suitably provided with a cartridge insertion opening to communicate with a corresponding cartridge insertion opening in the casing, when the barrel is in its rearmost position.

The arrangement according to the invention allows of readily dividing the gun into two separate parts when desired by releasing a suitably arranged stop member and moving the barrel forward until it is out of engagement with the mechanism casing.

A further important feature of the invention consists in the arrangement of downwardly projecting guide blocks on a vault-shaped rearward extension of the gun barrel, the `said guide blocks being in slidable engagement with guide rails on the top edges of the troughshaped mechanism casing.

The vault-shaped rearward barrel extension is sultably constructed to take up a correspondingly shaped breech block member in the rear end of the mechanism casing (receiver).

Other important features of the invention will appear from the following description of an embodiment of the invention.

The invention is applicable in connection with shot guns as well as with ries for any use, and it is capable of being applied to single as `well as to double `barrel guns.

The invention is illustrated by way of example in the accompanying drawings which show a single barrel shot gun.

United States Patent O ICC In the drawing:

Figure 1 is a longitudinal Vertical section of the gun barrel, and the breech mechanism open.

Figure 2 is a transverse section of the barrel on line 2-2 of Fig. 13, in the direction of the arrows.

Figure 3 is a side elevation of the barrel and breech mechanism closed.

Figure 4 is a cross section of the rear part of the breech casing, on line 4 4 of Fig. 3 in the direction of the arrows.

Figure 5 is a front elevation of the breech block.

Figure 6 is a side elevation of the breech block.

Figure 7 is an inside view of the right hand cover plate of the breech casing, the breech mechanism being closed and secured by the scar at the moment the hammer strikes the firing pin.

Figure 8 is anoutside view of the same plate with an arresting device for the slider.

Figure 9 is a side view of a slider on which the breech block is mounted, and which carries also an arresting latch for the cooking mechanism.

Figs. 10 and 1l are side views of the slider and c0- operating members of the mechanism.

Fig. 12 is a top View of the gun with the breech casing open.

Fig. 13 is a side elevation of the gun partly in section and with the barrel in a partly closed position.

Fig. 14 is a cross section of the breech block and breech casing,on the line 14-14 of Fig. 13, in the direction `of the arrows.

Fig. l5 is a cross sectional view of the barrel and foreend stock, on the line 15-15 of Fig. 16, in the direction of the arrows.

Fig. 16 is a side elevation of the gun in section with the breech mechanism closed. f

Fig. 17 is a side elevation of an arresting device for the slider.

Fig. 18 is a side view of the barrel and the stock with the breech casing separated from one another.

In the example illustrated in the drawings, A denotes the gun barrel secured to the fore-end stock 36. B denotes the breech casing on which the gun barrel A is slidably mounted. The casing B is secured to the butt end stock C in such a manner, that these parts are capable of being readily separated from one another. In the rear part of the breech casing B the breech block 2 is slidably mounted. there is mounted a movable stop member 33 for limiting the movement of the barrel A in a forward direction when the barrel A is in operative position on the frame.

In the bottom of the fore-end stock 36 there is an opening 55 (Fig. 18) which communicates with an opening 56 in the bottom of the breech casing B in front of the cartridge carrier of the feeding device, when the barrel A is in its rearmost position on the breech casing frame.

The `borrel The rear end of the gun barrel A has a short rearward extension 1 of an inverted U-shaped (or vault-like) sectional form. The interior of this barrel extension is provided with three grooves 3cz-3a and 4a to receive lugs 3 and 3 and 4 on the breech block head 2 (Figs. 1, 5 and 14). A longitudinal slot 28a in the barrel and barrel extension 1 is provided to take up the cartridge extractor 28 on the breech block slide (Fig. 1).

The barrel extension is slidably mounted on guide rails 53 on the top of the trough-shaped fore part of the breech casing B. The rails slide in longitudinal guiding grooves 53a on the inside walls of the barrel extension as shown in Figs. 1 4 and 14.

Breech block mechanism The breech block head 2 has a bore for the firing pin 5 (Figs. 5 and 6) and has two lugs 3, 3 at the bottom and one lug 4 at the top to t into corresponding grooves 3a-3a and 4a in the barrel extension 1.

The tail or rear end part of the breech block member is provided with a forwardly and downwardly inclined slot 8 having at its lower and foremost end `a short horizontal part. A guide pin 8a mounted on the wall of In the foremost part of the breech casing the breech casing projects into this slot, so that when the breech block is moved backwards, it will be raised to a sufficient extent to enable the lugs 3, 3 and 4 to enter into the corresponding grooves 3a, 3a and 4a in the barrel extension 1 when the barrel is in the closing position.

The breech block tail has a guide pin 9 adapted to engage an inclined slot or groove 9a in the wall of the breech casing (Figs. 3 and 6). This groove corresponds in form and length to slot 8 in the breech-block tail. By this arrangement a steady movement of the breech block in the breech casing is ensured.

The breech block member is attached to a slide 7 (Fig. 9) movable in guides in the breech casing along a rectilinear path, parallel to the barrel axis. The slide is guided by means of a longitudinal guiding groove 6 (Fig. 4) on the right and inside the wall 6 of the casing.

The breech block member is movable in a vertical path on the slide 7. For this purpose the slide 7 is constructed with a vertical guide block or rib 10 adapted to engage and to slide in a vertical slot 10a in the breech block member adjacent to the breech block head 2 (Figs. 6 and 9). The arrangement of this vertically sliding connection between the breech block and the slider, is arranged to enable the slider 7 to move in its guideway in a longitudinal direction, while the breech block in connection with this slider will move parallel to itself on its inclined guideway 8 and 9a in a longitudinal as well as in a transverse direction in relation to the barrel axis, when driven forward and backward together with the barrel.

Cockng mechanism The tiring sear member 11 is pivoted to the slide 7 at 11c (Fig. 9) and is actuated by a spring (not shown in the drawing) having the tendency to press the sear member 11 downwards.

The hook or latch 11a (Figs. 9 and 10) is adapted to engage a corresponding notch 12b in the hammer 12. The sear member is constructed with a notch 11b to engage a lug 18 on the wall of the breech casing 6 and with a nose 11x at its rearend to engage a lug 20h on a safety latch 20 (Figs. l, 10, 11), adapted to be actuated by nger pressure (or a hand grip). On its rear end the slide 7 has a downward projection 14, adapted to engage the one (right hand) arm of a lever pivoted at 17 (Fig. 10). The other (left hand) arm of this lever 15 engages a notch 12a on the side face of the hammer 12. This lever functions as a latch for the slide 7 to releasably hold same in its rearmost position (Fig. 10). The hammer 12 is pivotally mounted on the same bolt 24 as the trigger 23. The hammer 12 is actuated by the main spring 26, one end of which engages a notch 12c in the hammer (Fig. 10).

When the breech block 2 and slide 7 are driven backwards by means of a backward movement of the gun barrel, the latch 11a on the sear member 11 engages the notch 12b in hammer 12 and moves the hammer backward into cocked position. The one arm of lever 15 on a slideable connection with the hammer engages projection 14 on slide 7 and holds same locked in its rearmost position. When the trigger 23 is pulled the arm of the trigger lifts the sear member, and the sear latch 11a leaves notch 12b in the hammer, thereby releasing this latter (Fig. 7).

Cartridge feeding mechanism The breech casing B has a trough-shaped forward extension. In the bottom of the fore part of this troughshaped casing there is an opening 56 for insertion of cartridge in the magazine.` This opening 56 communicates with an opening 55 in the bottom of the hollow fore end stock 36 when the barrel is in its rearmost position so that a cartridge can be inserted.

In the rear part and in the bottom of this trough-shaped casing extension, a cartridge lifter 30 with its spring 29 is mounted, and at the top of the side walls of this casing two guide rails 32 are arranged for guiding the cartridges head. The distance between these rails 32 is greater than the diameter of the cartridge shell, but smaller than the diameter of the cartridge head. A at spring 31 with an upwardly turned rear end mounted on the bottom of the casing, back of the cartridge lifter` 30, serves to prevent an inserted cartridge n the magazine from moving forward during the forward movement of the barrel (as shown in Fig. 1). A bottom piece 25 in 4 the casing, back of the flat spring 31, has a sloping top surface (of 45 degrees angle) to aid in guiding the cartridge in its movement up into its position in line with the cartridge chamber in the barrel.

This bottom piece 25 has also a slot for fastening the hammer spring 26. The cooperation of the operators insertion of the cartridge and the cartridge feeding mechanism is in short as follows:

When the gun is in its cocked and locked position, the operator inserts a cartridge in the magazine through the opening 55 and 56 in the bottom of the fore end stock 36 and the trough-shaped casing B. The operator pushes the cartridge with his finger backward until the flat spring 31 in the magazine snaps behind the collar of the cartridgcs head. The cartridges head will now be kept down in its original position in the magazine by the two rails 32 on top of the casing, and by the at spring 31 in the magazine, and the fore end of the cartridge will be kept down in position by the rear end of the barrel. When the operator after firing moves the barrel forwardly for a new loading, the rear end of the barrel will release the fore end of the cartridge and the spring 29 of the cartridge lifter 30 will push the fore end of the cartridge up between the guide rails 32 on top of the casing and into the breech block chamber in the barrel extension 1, while at the rear part the cartridge head is kept down by means of the two guide rails 32 arranged on top of the trough-shaped part of the breech casing. When the barrel is now pulled back into its original cocked position, the cartridge is pushed backwards until its head is no longer in contact with the guide rails 32, whereby the cartridge can be lifted by the cartridge lifter 30 up into its position in line with the cartridge chamber. It then butts against the breech-block 2 and is carried forwardly and into its chamber in the barrel.

Combined take down and sliding barrel stop mechanism On the front end wall 60 of the trough-shaped breech casing is pivotally mounted an arresting block 33 (Fig. 15), adapted to limit the forward movement of the barrel on the breech frame. The block is made of a nonmetallic material having shock-absorbing characteristics to deaden the shock of the reciprocating barrel. The block 33 has an elongated bore for its pivot pin 34. This arrangement relieves the pivot pin 34 from the stress exerted by the moving barrel, the stress being taken up by the end wall 60 on which the block 33 will rest. At the end of a lever on block 33 is a small nger piece 38, the end of which is accessible from outside through the opening 55 in the hollow fore end stock. This finger piece is held between springs 35 in such a way as to permit the block to be held in one or the other of its extreme positions. In the upper position the block 33 functions as a stop to limit the forward movement of the barrel, as this block 33 with its rear end will butt against the fore end wall 60 on the breech casing, while the fore end of block 33 butts against the right hand guide block 52 on the approaching barrel extension 1, shown on Figs. 1, 2, 4, 12, 14 and 15. In the other position the block 33 is swung down and out of the path of the guide blocks 52 (Figs. 3 and 18) on the barrel extension 1, so that the barrel can be detached from the breech casing frame. When the gun is to be put together after transportation the barrel is simply slipped backward into its guideway on the breech casing frame to its cocked (and locked) position. Through the cartridge insertion opening 55 and 56 the block 33 is pushed up into its upper position. However, if the operator should forget to push the block up in its hold on position, this movement of the block 33 will be brought about automatically when the rst lcjartridge is inserted through the cartridge insertion charn- As it will be understood from the foregoing description of the gun, the take down arrangement is very simple and a readjustment of this strong sliding joint on account of wear will not become necessary.

Operation of the cockng mechanism 'of the guide blocks 52 of the barrel extension abuts against the breech-block locking latch 13 on the slide 7 (Figs. 8 and 17) and in its further backward movement unlock the slide 7 as well as the breech block. The sear 11,` catches with its hook 11a into the notch 12b on the hammer and in the course of thecontinued backward movement cocks the hammer. During this movement of the barrel, breech block and slide the seal 11 is under control of the lug 18 until the notch 11b has passed lug 18. Before the sears hook 11a has reached so far, however, its nose 11x (Fig. 11) has entered in below the lug 2Gb and is guided in its further travel backward by this lug 2011 until the hammer is cocked.

In the final part of the backward movement of the barrel the lever 15 moves up` under the lug 14 on the slide 7 and the breech block will have entered into its chamber in the barrel extension having moved vertically to the axis of the barrel on account of the sloping form of the guide surfaces. The whole mechanism is now in a locked position, and the gun is ready for use.

F ring operation When the gun is to be fired, the button S on the safety arm 20a is depressed by the operators hand grip around the stock and the sear 11 will be released from the latch 20 at the same time as the pressure on the trigger is trans* ferred to the sear 11 and lifts it so that notch 11b will catch over projection 18 and arrest the slide 7 in its for ward movement, while the hook 11a is released from its engagement with the hammer. The hammer now strikes against the firing pin (Figs. 5, 6 and 13). In the course of the movement of the hammer, the lever is released from its engagement with the slide 7, which is now held only by means of the sear 11, until the pressure of the finger on the trigger ceases.`

At this moment the sear 11 by means of a spring is pressed back to its original position, and the notch 11b disengages lug 18, so that the barrel is ready for a new loading manipulation. When the barrel is now again moved forward, the breech block head is still in its locked position in its chamber in the barrel extension, and owing to the horizontal direction of the corresponding part of the guide surfaces of the breech block, the position of the breech block head 2 in its chamber is not altered before the inclined part of the guide surface is reached, but in the course of the continued forward movement of the barrel, the breech head travels out of its chamber in a direction perpendicular to the barrel axis, and when the recoil lugs are released from the breech block chamber, it will be in its foremost position in the breech casing. The slide '7 and consequently also the breechy block 2 will then be fastened in this position by means of the latch 13. This latch 13 (shown in Figures 8 and 17) 1s hinged on a screw 19 fastened to the slide 7. The rear arm of this latch 13 is pressed down on lug 13a by a spring (not shown in the drawing), and when the breech block is in its foremost position, the rear arm of latch 13 will snap down in front of lug 13a on the casings wall 6 and arrest the breech block (Figs. 8 and 17).

In the course of the further forward movement of the barrel the empty cartridge is thrown out and the loading operation takes place. t

When the gun is opened for the purpose of removing cartridges by depressing the button 22, this latter abuts against the lever 15 and releases same from its engagement with the projection 14 on the slide 7. 'Ihe hammer which is now locked in its engagement with the sear latch, pushes the slide and the breech block forward and out of engagement with the walls of the breech block chamber in the barrel extension. When the operator moves the barrel further forward, the extractor will pull the cartridge out of the barrel. The cartridge in the barrel will then be tilted up and can be removed.

T he gun in use The illustrated gun is loaded and cocked by moving the barrel by a movement of the operators hand .forward to its foremost position and then backwards to its rearmost position in relation to the buttaend stock. An empty cartridge shell in the cartridge chamber of thebarrel 1s extracted and ejected in the course of this manipulation. The cartridge feeding mechanism of the gun is actuated by the same manipulation.

When the gun is to be used, a cartridge may be inserted by hand directly into the cartridge chamber in the barrel, but the simplest way is to insert a cartridge into the magazine through the opening 55 and 56 in the foreend stockand `the casing. By means of depressing the pressure button 22 at the right hand side of the trigger, the barrel is unlocked, and by a movement with the hand the operator slides the barrel forwardly until it abuts against the arresting block 33, provided for this purpose. In the course of this movement of the barrel the breech block travels out of its chamber in the barrel extension and the spring of the cartridge lifter 30 pushes the foremost end of the cartridge up between the guide rails 32 on top of the trough-shaped casing into the breech block chamber in the barrel extension, while the rear part of the cartridge is kept down by means of two guide rails 32 arranged in the magazine on top of the head of the trough-shaped rear part of the breech casing, as shown in Fig. l. When the barrel is now pulled back into its original position, the cartridge is pushed backwardly until its head is no longer in contact with the guide rails 32, whereby the cartridge is raised by means of the cartridge lifter up into its position in alignment with the cartridge chamber. It then abuts against the breech block 2 and is carried forward and into its chamber in the barrel. The breech block head 2 is then immediately below its chamber in the barrel extension. In the course of the last part of the backward movement of the barrel, the breech block enters vertically up into its chamber in the barrel extension and is locked in the same. The hammer is cocked and locked. The gun is now ready for a new ring, and a new cartridge is therefore inserted into the magazine. When the shot has been tired, the barrel still remains locked in its rearmost position, until the pressure of the operators finger on the trigger 23 ceases. The barrel will then be unlocked, and the loading manipulation can be repeated by moving the barrel forward, and then back again. In the course of the forward movement of the barrel the breech block 2 descends and leaves the grooves in the barrel extension. At the same time the extractor draws the empty cartridge case out of the cartridge chamber in the barrel, and the front end of the new cartridge in the magazine is swung up and butts against the empty cartridge, so that the latter is thrown out. The operations are then repeated as above explained.

When the operator at the end of a hunt or a shooting exercise desires to assure himself that no cartridges are in the barrel or magazine, he depresses the pressure button 22 at the right hand side of the trigger guard 21. Thereby the barrel is unlocked, because the slide 7 carrying the breech block is released from its engagement with the breech casing. The striking spring 26 of the hammer 12 forces the slide and the breech block forward. Then the barrel is moved further forward until it abuts against the arresting block 33, the opening between breech block and barrel extension is sufliciently large to enable the operator to remove cartridges in the barrel as Well as in the magazine.

If it is desirable in order to facilitate transportation to divide the gun into its two principal parts, this can be done by depressing the pressure button 22 below the right hand side of the trigger guard 21, whereupon the barrel is moved forward until the manipulation stud 38 for the arresting block 33 appears in the opening 55 in the fore-end stock.

By means of a light pressure on the stud 38 the arresting block slips into the trough-shaped bottom of the casing and releases the barrel from the lock housing and the butt-end-stock.

I claim:

l. In a repeater gun, the combination of a butt end stock; a breech casing, attached to said stock, and having a trough-shaped forward open-top elongation providing a cartridge magazine, the top edges of said elongation constituting rectilinear guiding rails; a barrel slidably mounted on said casing and having guiding blocks on its rear end, co-acting with said rails; and a breech block slidably mounted in said casing rearwardly of said barrel.

2. A repeater gun, according to claim 1, in which said breech block has limited movement longitudinally and transversely relative to the axis of said barrel, and in which said barrel has a vault-shaped rearward extension into and out of engagement with which said breech block moves.

3. A repeater gun, according to claim 1, in which said breech block has limited movement longitudinally and transversely relative to the axis of the barrel, in which said barrel has a vault-shaped rearward extension into and out of engagement with which said'breech block moves, and in which a guide-Way mechanism is mounted on said breech casing and said breech block and comprises two co-acting members consisting of an inclined cam slot and a pin moving in said slot one of said members being on said breech casing and the other member being on said breech block.

4. A repeater gun, according to claim 1, in which said barrel has a rearward extension provided with longitudinal lateral grooves, and said breech block has corresponding projections received in said grooves when said breech block is moved into said extension.

5. A repeater gun, according to claim 1, in which said breech block comprises a slide movable longitudinally of the axis of the barrel, and a head mounted on said slide and movable transversely of said axis.

6. A repeater gun, according to claim l, in which said breech block is provided with a fastening member and said breech casing is provided with a fastening member, said members co-acting to fix said breech block relative to said breech casing when said breech block moves to its rearmost position in said breech casing.

7. A repeater gun, according to claim 1, in which said breech casing has guides for said breech block for movement longitudinally and transversely of the axis of the barrel, and said barrel has fastening means on its rear for engaging said breech block.,

8. A repeater gun, according to claim 1, having a-fore end part of the gun stock fastened to the gun barrel and movable therewith independently of the butt end stock, said fore end part of the gun stock being hollow and enclosing the fore end part of the open top elongation of the breech casing, when the barrel is in its rearmost position.

9. A repeater gun, according to claim 1, in which said casing and breech block are provided with guiding means for movement of said breech block longitudinally and transversely of the axis of the barrel, said guiding means comprising two members consisting of a cam slot and a pin moving in said slot, one of said members being on said breech casing and the other member being on said breech block.

10. A repeater gun, according to claim 1, in which a movable stop member, adapted to limit the forward movement of said barrel on said casing, is disposed in the fore-end part of said open-top elongation, being pivotally mounted on the wall of said elongation and adapted to be lifted up into the path of said guiding blocks on the barrel, thereby interrupting the forward movement of the barrel in the course of the loading and cocking operation.

11. A repeater gun, according to claim 1, in which a movable stop member, adapted to limit the forward movement of said barrel on said casing, is disposed in the fore-end part of said open-top elongation, being pivotally mounted on the wall of said elongation and adapted to be lifted up into the path of said guiding blocks on the barrel, thereby interrupting the forward movement of the barrel in the course of the loading and cocking operation, the said stop member being composed of a non-metallic material having shock-absorbing characteristics.

12. A repeater gun, according to claim 1, in which a movable stop member, adapted to limit the forward movement of said barrel on said casing, is disposed in the fore-end part of said open-top elongation, being pivotally mounted on the wall of said elongation and adapted to be lifted up into the path of said guiding blocks on the barrel, thereby interrupting the forward movement of the barrel in the course of the loading and cocking operation, said open-top elongation being closed at its fore end by a transverse wall member and said stop member being so arranged adjacent to\said transverse wall member as to abut against the inside of said transverse wall member when in its raised position thereby causing the shock from the rearwardly moving barrel to be taken up directly by said transverse wall member.

References Cited in the file of this patent UNITED STATES PATENTS 487,659 Browning Dec. 6, 1892 676,181 Evans June 1l, 1901 2,069,887 Laudensack Feb. 9, 1937 2,126,788 Lewis Aug. 16, 1938 2,333,677 Roemer Nov. 9, 1943 2,397,572 Weaver Apr. 2, 1946 2,418,946 Loomis Apr. 15, 1947 2,422,532 Dehm June 17, 1947 

